Background: Primary dysmenorrhea is a common and often debilitating condition affecting 40-90% of menstruating women. This condition reduces functionality, quality of life, and social activities. Transcranial direct current stimulation (tDCS) has been used in many chronic pain syndromes, with evidence of improved pain, functionality, and mood in women with primary dysmenorrhea. The objective of this study was to determine whether tDCS could offer clinical benefits on pain, anxiety, affectivity, and functionality in women with primary dysmenorrhea. Methods: This parallel, sham, randomized, double-blind trial was conducted with 26 women randomized into sham tDCS and active tDCS. Anodal tDCS was applied for 5 consecutive days over F3 corresponding to the left dorsolateral prefrontal cortex (DLPFC) and the cathode electrode over Fp2 for 20 min with an intensity of 2 mA. A numeric rating scale (NRS) was used to assess pain, anxiety, positive and negative affect, and submaximal aerobic performance during two consecutive menstrual cycles. Results: No significant interaction was found between intervention and time on the NRS [F (2,44) = 1.358, p = 0.26], and a significant main effect of time [F(2,44) = 4.446, p = 0.01] was found. The active group showed a significant reduction in anxiety (p = 0.03) with a mean difference of 5.12 (95% CI 0.79 to 11.05). No significant differences in positive and negative affect were found (p = 0.95 and p = 0.15, respectively). Submaximal aerobic performance was significantly greater in the active group [F(2,21) = 5.591, p = 0.02], with a mean difference of 70.87 (95% CI 8.53 to 133.21). Conclusion: Anodal tDCS over the DLPFC seems to be an effective therapeutic approach for improving anxiety and functionality in women with primary dysmenorrhea.

COVID-19 outbreak has been dogged the whole world and besides economic damage; this new virus has been collapsing health units worldwide. Many people have been infected and died every day and so far, there are no vaccines or drugs approved to fight off COVID-19. In this sense, many countries have adopted strategies to avoid virus spread during the quarantine. Social isolation has caused psychological impacts and changes in people’s routine, thus physical exercise emerges as an alternative to decrease cognitive problems developed by people during the quarantine. The use of technology to guide people during physical education classes has become a great strategy for people who cannot leave their homes. Besides, technology can insert people in an immersive environment increasing their interaction, merriment, improving their immune and cardiovascular systems. Physical education teacher must be considered an essential health professional during this pandemic period because they can guide and stimulate individuals to practice physical exercise routinely, in order to keep and improve their health.